GitLab

This change:
1) Reflects the window controls horizontally for RTL
2) Reflects the profile switcher horizontally for RTL
3) Adjusts the left and right indents for the tabstrip itself to account for
   those reflections

BUG=642732

Review-Url: https://codereview.chromium.org/2313723004
Cr-Commit-Position: refs/heads/master@{#417339}